Is the Iran skirmish over? Or is this the beginning of something bigger? Gabriel Sherman, special correspondent for Vanity Fair, joins Nick to explain how this all went down inside the Trump White House, why anti-immigration scribe Steven Miller still has a job, why Don Jr. will go on to run for office, but Ivanka won't, and—perhaps most importantly—what Donald J. Trump told a Republican pollster last week when asked what the "J" in his middle name stood for.